Chroma trap design for composite video signals

[badgerthing]

Hello! I'm working on a project for the niche task of converting NTSC composite, to RGB+S. An NTSC decoder. Basically, to allow me to view NTSC sources on a PAL-only 1084S-P monitor (that also has RGBS input).
For my purpose, it mustn't scale or touch framerate, and I'd prefer a high quality output, so I can't use a digital PAL<>NTSC converter off aliexpress.

I have based my circuit off ON Semiconductor application note AN1019/D.

It seems to be almost perfect, but the output has a ringing/overshoot artifact to the right of transitions.
I believe I've narrowed this down to the 3.58MHz trap circuit. The artifacts are only visible in the correctly adjusted sweet spot. If I purposely misadjust the inductor, the artifacts blend in as the entire image gets chroma leakage.



Any suggestions how I may get rid of this ringing artifact?

Attached is my current schematic, including bodges I've made to fix mistakes.
 NTSC2RGB.pdf (157.11 kB - downloaded 167 times.)

Cheers!